lld/test/MachO/bss.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t.o
   3 # RUN: %lld -o %t %t.o
   4 # RUN: llvm-readobj --section-headers --macho-segment %t | FileCheck %s
   5
   6 ## Check that __bss takes up zero file size, is at file offset zero, and appears
   7 ## at the end of its segment. Also check that __tbss is placed immediately
   8 ## before it.
   9 ## Zerofill sections in other segments (i.e. not __DATA) should also be placed
  10 ## at the end.
  11
  12 # CHECK:        Index: 1
  13 # CHECK-NEXT:   Name: __data
  14 # CHECK-NEXT:   Segment: __DATA
  15 # CHECK-NEXT:   Address:
  16 # CHECK-NEXT:   Size: 0x8
  17 # CHECK-NEXT:   Offset: 4096
  18 # CHECK-NEXT:   Alignment: 0
  19 # CHECK-NEXT:   RelocationOffset: 0x0
  20 # CHECK-NEXT:   RelocationCount: 0
  21 # CHECK-NEXT:   Type: Regular (0x0)
  22 # CHECK-NEXT:   Attributes [ (0x0)
  23 # CHECK-NEXT:   ]
  24 # CHECK-NEXT:   Reserved1: 0x0
  25 # CHECK-NEXT:   Reserved2: 0x0
  26 # CHECK-NEXT:   Reserved3: 0x0
  27
  28 # CHECK:        Index: 2
  29 # CHECK-NEXT:   Name: __thread_bss
  30 # CHECK-NEXT:   Segment: __DATA
  31 # CHECK-NEXT:   Address:
  32 # CHECK-NEXT:   Size: 0x4
  33 # CHECK-NEXT:   Offset: 0
  34 # CHECK-NEXT:   Alignment: 0
  35 # CHECK-NEXT:   RelocationOffset: 0x0
  36 # CHECK-NEXT:   RelocationCount: 0
  37 # CHECK-NEXT:   Type: ThreadLocalZerofill (0x12)
  38 # CHECK-NEXT:   Attributes [ (0x0)
  39 # CHECK-NEXT:   ]
  40 # CHECK-NEXT:   Reserved1: 0x0
  41 # CHECK-NEXT:   Reserved2: 0x0
  42 # CHECK-NEXT:   Reserved3: 0x0
  43
  44 # CHECK:        Index: 3
  45 # CHECK-NEXT:   Name: __bss
  46 # CHECK-NEXT:   Segment: __DATA
  47 # CHECK-NEXT:   Address:
  48 # CHECK-NEXT:   Size: 0x10000
  49 # CHECK-NEXT:   Offset: 0
  50 # CHECK-NEXT:   Alignment: 0
  51 # CHECK-NEXT:   RelocationOffset: 0x0
  52 # CHECK-NEXT:   RelocationCount: 0
  53 # CHECK-NEXT:   Type: ZeroFill (0x1)
  54 # CHECK-NEXT:   Attributes [ (0x0)
  55 # CHECK-NEXT:   ]
  56 # CHECK-NEXT:   Reserved1: 0x0
  57 # CHECK-NEXT:   Reserved2: 0x0
  58 # CHECK-NEXT:   Reserved3: 0x0
  59
  60 # CHECK:        Index: 4
  61 # CHECK-NEXT:   Name: foo
  62 # CHECK-NEXT:   Segment: FOO
  63 # CHECK-NEXT:   Address:
  64 # CHECK-NEXT:   Size: 0x8
  65 # CHECK-NEXT:   Offset: 8192
  66 # CHECK-NEXT:   Alignment: 0
  67 # CHECK-NEXT:   RelocationOffset: 0x0
  68 # CHECK-NEXT:   RelocationCount: 0
  69 # CHECK-NEXT:   Type: Regular (0x0)
  70 # CHECK-NEXT:   Attributes [ (0x0)
  71 # CHECK-NEXT:   ]
  72 # CHECK-NEXT:   Reserved1: 0x0
  73 # CHECK-NEXT:   Reserved2: 0x0
  74 # CHECK-NEXT:   Reserved3: 0x0
  75
  76 # CHECK:        Index: 5
  77 # CHECK-NEXT:   Name: bss
  78 # CHECK-NEXT:   Segment: FOO
  79 # CHECK-NEXT:   Address:
  80 # CHECK-NEXT:   Size: 0x8
  81 # CHECK-NEXT:   Offset: 0
  82 # CHECK-NEXT:   Alignment: 0
  83 # CHECK-NEXT:   RelocationOffset: 0x0
  84 # CHECK-NEXT:   RelocationCount: 0
  85 # CHECK-NEXT:   Type: ZeroFill (0x1)
  86 # CHECK-NEXT:   Attributes [ (0x0)
  87 # CHECK-NEXT:   ]
  88 # CHECK-NEXT:   Reserved1: 0x0
  89 # CHECK-NEXT:   Reserved2: 0x0
  90 # CHECK-NEXT:   Reserved3: 0x0
  91
  92 # CHECK:      Name: __DATA
  93 # CHECK-NEXT: Size:
  94 # CHECK-NEXT: vmaddr:
  95 # CHECK-NEXT: vmsize: 0x11000
  96 # CHECK-NEXT: fileoff:
  97 # CHECK-NEXT: filesize: 4096
  98
  99 # CHECK:      Name: FOO
 100 # CHECK-NEXT: Size:
 101 # CHECK-NEXT: vmaddr:
 102 # CHECK-NEXT: vmsize: 0x9000
 103 # CHECK-NEXT: fileoff:
 104 # CHECK-NEXT: filesize: 4096
 105
 106 .globl _main
 107
 108 .text
 109 _main:
 110   movq $0, %rax
 111   retq
 112
 113 .bss
 114 .zero 0x8000
 115
 116 .tbss _foo, 4
 117 .zero 0x8000
 118
 119 .data
 120 .quad 0x1234
 121
 122 .zerofill FOO,bss,_zero_foo,0x8000
 123
 124 .section FOO,foo
 125 .quad 123